The integration of building with solar collector was studied. The theoretical model of integration of building envelopes and flat plate solar collectors was set up and the thermal performance of integration was studie...The integration of building with solar collector was studied. The theoretical model of integration of building envelopes and flat plate solar collectors was set up and the thermal performance of integration was studied in winter and summer,and compared to envelopes without solar collectors. The results show that the solar collection efficiency is raised in the integration of building envelopes and solar collectors with the air layer doors closed. This is true whether in winter or summer. The increment is higher as the inlet water temperature increases or the ambient temperature is low. In winter,the heat loss is significantly reduced through integration of the building envelopes and solar collectors with the closed air layer doors. The integration with the open air layer door is worse than that without collectors. In summer,the heat gains of the integration of envelopes and solar collectors are more obviously reduced than envelopes without collectors,the integration with the open air layer door is a little better than the closed one,but the difference is very small.展开更多
The key role of the building envelope in achieving building energy efficiency and indoor comfort for the user has been long established.The most promising-and innovative-strategy for the building envelope of the futur...The key role of the building envelope in achieving building energy efficiency and indoor comfort for the user has been long established.The most promising-and innovative-strategy for the building envelope of the future is based on a dynamic,active and integrated solution,that is able to optimize the thermal performance,integrate the active elements and systems,and exploit energy from renewable sources.This paper illustrates the most relevant results of a decade-long research activity carried out on active and integrated building envelopes at the Politecnico di Torino,in which numerical analyses and experimental campaigns,involving test cells and field monitoring,have been performed.The overall performances of different façade modules and the thermo-physical behaviour of various components,under different operating strategies,are presented and discussed.The analysis provides information on the contribution of each subsystem,e.g.glazing,sun-shading devices,natural and mechanical ventilation,...to the achieved energy efficiency and the overall performances of different typologies of Double-Skin Façades(DSFs)and Advanced Integrated Façades(AIFs).展开更多
A newly designed solar collector named dual-function solar collector is proposed.The dual-function solar collector integrated with building can perform in two different modes:working as a passive space heating collect...A newly designed solar collector named dual-function solar collector is proposed.The dual-function solar collector integrated with building can perform in two different modes:working as a passive space heating collector in cold sunny days such as in winter,or working as a facade water heating collector in hot days such as in summer.An experimental study has been carried out to investigate the performance of the novel system in space heating mode,whilst,the dynamic numerical model has been established and validated.The experimental and numerical results show that during the period of the measurement from 9:00 to 17:00,the mean indoor temperature was up to 24.7°C while the mean ambient temperature was only 4.8°C,and a temperature stratification was present in the room.Moreover,a numerical study on the effect of optical property of coatings has been carried out.展开更多
Net-zero and other high performance green buildings normally do or should include optimized solar energy systems.While detailed computer-based energy simulations of buildings’energy systems are becoming near-commonpl...Net-zero and other high performance green buildings normally do or should include optimized solar energy systems.While detailed computer-based energy simulations of buildings’energy systems are becoming near-commonplace for many projects,simple,easy-to-use data tables are beneficial earlier in the design process to help guide preliminary decisions in all projects.Practical lookup tables,and then comparison of the data they contain,are also very useful for teaching new concepts,in this case for learning about solar orientations in sunny locations.Engineers,architects,design-build contractors,students,and other designers of green buildings can benefit through knowing,in advance,how exterior surfaces’orientations increase or decrease the total annual solar energy arriving upon those surfaces.For example,maximizing the incoming energy on a particular roof is advantageous for gathering solar energy for heat or for conversion of that sunlight to electricity,but various requirements often limit designers’choices for surfaces’orientations.This paper presents simple tables that form a tool for making initial decisions on surfaces’directions and slopes;the user can then study various effects further,such as local factors including cloudiness and shading,with detailed software.The classical solar geometry equations utilized are documented here for repeatability of the research,but are not necessary for use of this paper’s tables.Practical examples are given too to help readers use the tables.展开更多
As a building integrated solar thermal system,the dual-function solar collector integrated with building works for passive space heating in cold winter season,and for water heating in warm seasons.In this paper,the st...As a building integrated solar thermal system,the dual-function solar collector integrated with building works for passive space heating in cold winter season,and for water heating in warm seasons.In this paper,the study is made on the dual-function solar collector integrated with building when it works in water heating mode with natural circulation.The coupled model of the collector and building's environment is established and validated.A numerical simulation is achieved to show the thermal effect of the novel system on the building in summer.By comparing with the cooling loads of the rooms with or without the novel collector in summer,the results show that when in summer,the novel solar system is available for serving hot water,and it does not have the summer overheating problem,and can even improve the thermal environment of its building slightly.展开更多
基金Project(2006BAJ01A12-10-03) supported by the National Natural Science Foundation of ChinaProject(J50502) supported by the Leading Discipline of Shanghai Education Commission,China
文摘The integration of building with solar collector was studied. The theoretical model of integration of building envelopes and flat plate solar collectors was set up and the thermal performance of integration was studied in winter and summer,and compared to envelopes without solar collectors. The results show that the solar collection efficiency is raised in the integration of building envelopes and solar collectors with the air layer doors closed. This is true whether in winter or summer. The increment is higher as the inlet water temperature increases or the ambient temperature is low. In winter,the heat loss is significantly reduced through integration of the building envelopes and solar collectors with the closed air layer doors. The integration with the open air layer door is worse than that without collectors. In summer,the heat gains of the integration of envelopes and solar collectors are more obviously reduced than envelopes without collectors,the integration with the open air layer door is a little better than the closed one,but the difference is very small.
文摘The key role of the building envelope in achieving building energy efficiency and indoor comfort for the user has been long established.The most promising-and innovative-strategy for the building envelope of the future is based on a dynamic,active and integrated solution,that is able to optimize the thermal performance,integrate the active elements and systems,and exploit energy from renewable sources.This paper illustrates the most relevant results of a decade-long research activity carried out on active and integrated building envelopes at the Politecnico di Torino,in which numerical analyses and experimental campaigns,involving test cells and field monitoring,have been performed.The overall performances of different façade modules and the thermo-physical behaviour of various components,under different operating strategies,are presented and discussed.The analysis provides information on the contribution of each subsystem,e.g.glazing,sun-shading devices,natural and mechanical ventilation,...to the achieved energy efficiency and the overall performances of different typologies of Double-Skin Façades(DSFs)and Advanced Integrated Façades(AIFs).
基金supported by the National Natural Science Foundation of China (Grant No. 50876098)the National High Technology Research and Development Program of China (Grant No. 2006AA05Z412)the National Key Technology R&D Program of China (Grant No. 2006BAA04B04)
文摘A newly designed solar collector named dual-function solar collector is proposed.The dual-function solar collector integrated with building can perform in two different modes:working as a passive space heating collector in cold sunny days such as in winter,or working as a facade water heating collector in hot days such as in summer.An experimental study has been carried out to investigate the performance of the novel system in space heating mode,whilst,the dynamic numerical model has been established and validated.The experimental and numerical results show that during the period of the measurement from 9:00 to 17:00,the mean indoor temperature was up to 24.7°C while the mean ambient temperature was only 4.8°C,and a temperature stratification was present in the room.Moreover,a numerical study on the effect of optical property of coatings has been carried out.
基金supported by Rock Consulting Engineers and the University of Kansas,both of or near Lawrence,KS.
文摘Net-zero and other high performance green buildings normally do or should include optimized solar energy systems.While detailed computer-based energy simulations of buildings’energy systems are becoming near-commonplace for many projects,simple,easy-to-use data tables are beneficial earlier in the design process to help guide preliminary decisions in all projects.Practical lookup tables,and then comparison of the data they contain,are also very useful for teaching new concepts,in this case for learning about solar orientations in sunny locations.Engineers,architects,design-build contractors,students,and other designers of green buildings can benefit through knowing,in advance,how exterior surfaces’orientations increase or decrease the total annual solar energy arriving upon those surfaces.For example,maximizing the incoming energy on a particular roof is advantageous for gathering solar energy for heat or for conversion of that sunlight to electricity,but various requirements often limit designers’choices for surfaces’orientations.This paper presents simple tables that form a tool for making initial decisions on surfaces’directions and slopes;the user can then study various effects further,such as local factors including cloudiness and shading,with detailed software.The classical solar geometry equations utilized are documented here for repeatability of the research,but are not necessary for use of this paper’s tables.Practical examples are given too to help readers use the tables.
基金supported by the National Natural Science Foundation of China (50876098)the National Key Technology R&D Program of China (2006BAA04B04)
文摘As a building integrated solar thermal system,the dual-function solar collector integrated with building works for passive space heating in cold winter season,and for water heating in warm seasons.In this paper,the study is made on the dual-function solar collector integrated with building when it works in water heating mode with natural circulation.The coupled model of the collector and building's environment is established and validated.A numerical simulation is achieved to show the thermal effect of the novel system on the building in summer.By comparing with the cooling loads of the rooms with or without the novel collector in summer,the results show that when in summer,the novel solar system is available for serving hot water,and it does not have the summer overheating problem,and can even improve the thermal environment of its building slightly.
